Methyl 5-cyano-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 6-chloro-4-nitro-2-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 3-cyano-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-carboxylate
Methyl 6-cyano-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-carboxylate